The naysayers, they don't mean a thing.

Most definitely always been a passion, and always been one of my goals in life as a young person, to have my own business. My dad gave us his entrepreneurial mindset, so that was also ingrained, as well as the tennis. So in a lot of ways it's a part of making my parents proud. I think we all want to make our parents proud, you know?

I think that Billie (Jean King) and Zina (Garrison), they have a whole lot of experience. Even if I don't quite agree with something or have a different way of doing it this week, whatever they said, I did it right away and I found out that it was correct. I think that's helped a lot...I'm having fun. I had a lot of fun out there. Sometimes I was ready to smile -- but I knew I'd lose focus -- because I was doing things that I'd done in practice and we talked about. I was ready to laugh and give someone a high-five, but it wasn't time for that.

For years I felt that I didn't have enough stamina and then, four years ago, I felt like I was not getting enough air but I was diagnosed with exercise-induced asthma. The medicine for asthma never worked.

The big push for me is the Olympics this year. If I'm healthy, I'm not worried about my ranking. I think I can hit the ball. It's just about my body cooperating. It's about being able to play matches in a row. Right now, I'm not sure how much I can do with that, but we'll see.

When you get into that habit of winning, it gets - I don't know if you call it contagious - but it gets to be a habit. She's developed an unbelievable habit.

I guess some kids around me had to grow up quickly, had all those problems. But I wasn't one of those kids, or around those kids, not at all.